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    <title>Document</title>
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    <script>
        //找出大于20的数
        var arr = [32,34 ,21,14,23];
        var newarr = [];
        var j = 0 ;
        for(var i = 0;i<arr.length;i++){
           
            if(arr[i]>20){
                newarr[j]=arr[i];
                j++;
            }
        }
        console.log(newarr);
       
    </script>
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